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Wyszukujesz frazę "linear regression" wg kryterium: Temat


Tytuł:
EA-MOSGWA : a tool for identifying associated SNPs in Genome Wide Association Studies
EA-MOSGWÀ : narzędzie do identyfikacji przyczynowych SNPów w badaniach asocjacyjnych całego genomu
Autorzy:
Gola, A.
Bogdan, M.
Frommlet, F.
Powiązania:
https://bibliotekanauki.pl/articles/375689.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
evolutionary algorithm
Genome Wide Association
linear regression
Opis:
This paper presents the current stage of the development of EA-MOSGWA - a tool for identifying causal genes in Genome Wide Association Studies (GWAS). The main goal of GWAS is to identify chromosomal regions which are associated with a particular disease (e.g. diabetes, cancer) or with some quantitative trait (e.g height or blood pressure). To this end hundreds of thousands of Single Nucleotide Polymorphisms (SNP) are genotyped. One is then interested to identify as many SNPs as possible which are associated with the trait in question, while at the same lime minimizing the number of false detections. The software package MOSGWA allows to detect SNPs via variable selection using the criterion mBIC2, a modified version of the Schwarz Bayesian Information Criterion. MOSGWA tries to minimize mBIC2 using some stepwise selection methods, whereas EA-MOSGWA applies some advanced evolutionary algorithms to achieve the same goal. We present results from an extensive simulation study where we compare the performance of EA-MOSGWA when using different parameter settings. We also consider using a clustering procedure to relax the multiple testing correction in mBlC2. Finally we compare results from EA-MOSGWA with the original stepwise search from MOSGWA, and show that the newly proposed algorithm has good properties in terms of minimizing the mBIC2 criterion, as well as in minimizing the misclassification rate of detected SNPs.
W artykule przedstawiony jest aktualny stan rozwoju programu EA-MOSGWA - narzędzia służącego do identyfikacji przyczynowych genów w badaniach asocjacyjnych całego genomu (ang. Genome Wide Association Studies, GWAS). Głównym celem tych badań jest określenie tych rejonów chromosomu, które są związane z występowaniem chorób genetycznych (np. cukrzyca, rak) lub wpływają na daną cechę (np. wysokość lub ciśnienie krwi). Sprowadzają się one do przebadania wielu tysięcy polimorfizmów pojedynczego nukleotydu (ang. Single Nucleotide Polymorphisme SNP) i powiązaniu ich (pojedynczych lub grupy SNPów) z przypadkami klinicznymi oraz możliwymi do zmierzenia cechami. Kluczową kwestią jest zidentyfikowanie jak największej liczby przyczynowych SNPów przy jednoczesnej minimalizacji fałszywych odkryć. Program MOSGWA umożliwia detekcje SNPów poprzez wybór zmiennych z użyciem kryterium mBIC2 - zmodyfikowanej wersji Bayesowskiego kryterium informacyjnego Schwarza. MOSGWA stara się zminimalizować mBIC2 przy pomocy metody selekcji Stepwise, podczas gdy EA-MOSGWA wykorzystuje w tym cclu zmodyfikowaną wersję algorytmu ewolucyjnego. W artykule prezentujemy wyniki szeroko zakrojonych badań symulacyjnych, w których możemy porównać wydajność EA-MOSGWA przy użyciu różnych ustawień parametrów. Również bierzemy pod uwagę klasteryzację SNPów, aby złagodzić korekcje wielokrotnego testowania w metodzie mBIC2. Przedstawiamy także porównanie wyników otrzymanych przez EA-MOSGWA z wynikami metody Stepsiwe używanej w programie MOSGWA, aby pokazać że proponowana metoda ma dobre właściwości minimalizacji kryterium mBIC2 oraz minimalizacji wskaźnika fałszywych detekcji.
Źródło:
Theoretical and Applied Informatics; 2013, 25, 3-4; 251-262
1896-5334
Pojawia się w:
Theoretical and Applied Informatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiple Linear Regression Using Cholesky Decomposition
Autorzy:
Sumiati, Ira
Handoyo, Fiyan
Purwani, Sri
Powiązania:
https://bibliotekanauki.pl/articles/1031897.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cholesky decomposition
Multiple linear regression
covariance matrix
Opis:
Various real-world problem areas, such as engineering, physics, chemistry, biology, economics, social, and other problems can be modeled with mathematics to be more easily studied and done calculations. One mathematical model that is very well known and is often used to solve various problem areas in the real world is multiple linear regression. One of the stages of working on multiple linear regression models is the preparation of normal equations which is a system of linear equations using the least-squares method. If more independent variables are used, the more linear equations are obtained. So that other mathematical tools that can be used to simplify and help to solve the system of linear equations are matrices. Based on the properties and operations of the matrix, the linear equation system produces a symmetric covariance matrix. If the covariance matrix is also positive definite, then the Cholesky decomposition method can be used to solve the system of linear equations obtained through the least-squares method in multiple linear regression. Based on the background of the problem outlined, such that this paper aims to construct a multiple linear regression model using Cholesky decomposition. Then, the application is used in the numerical simulation and real case.
Źródło:
World Scientific News; 2020, 140; 12-25
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability test of a GNSS onboard receiver in the kinematic mode
Autorzy:
Ćwiklak, Janusz
Krasuski, Kamil
Grzegorzewski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/320769.pdf
Data publikacji:
2019
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
GPS
EGNOS
RMS
air navigation
linear regression
Opis:
The article presents the results of the aircraft Cessna 172 positioning based on navigation solutions in the GPS and EGNOS (SBAS) tracking mode. The article makes a comparison of coordinate readings of the Cessna 172 in the ellipsoidal BLh frame. The verification of the coordinates of the aircraft Cessna 172 was used to assess the reliability of the GNSS satellite technique in aviation. In a research test, the navigation data were recorded by the onboard receiver Thales Mobile Mapper during an air test performed over the military aerodrome EPDE in Dęblin. Judging by the conducted investigations, it is possible to conclude that the difference in BLh coordinates of the aircraft Cessna 172 on the basis of the GPS solution and EGNOS (SBAS) solution equals, respectively: from -0.5 m to +3 m for component B; and from -2 m to +6 m for component L; from approximately -11 m to over +1 m for component h. In addition, the paper defines factors of dilution of precision PDOP, based on the GPS and EGNOS (SBAS) solutions. The average value of the PDOP coefficient for a solution in the tracking GPS mode was 2.7, whereas in the EGNOS (SBAS) tracking mode, it was equal to 2.8.
Źródło:
Annual of Navigation; 2019, 26; 106-113
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Testing the Significance of the Coefficients in the Multiple Regression Analysis
O testowaniu istotności współczynników w modelu regresji wielorakiej
Autorzy:
Kończak, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/906860.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
linear regression model
permutation test
Monte Carlo
Opis:
The multiple regression analysis is a statistical tool for the investigation relationships between the dependent and independent variables. There are some procedures for selecting a subset of given predictors. These procedures are widely available in statistical computer packages. The most often used are forward selection, backward selection and stepwise selection. In these procedures testing the significance of parameters is used. If some assumptions such as normality errors are not fulfilled, the results of testing significance of the parameters may not be trustworthy. The main goal of this paper is to present a permutation test for testing the significance of the coefficients in the regression analysis. Permutation tests can be used even if the normality assumption is not fulfilled. The properties of this test were analyzed in the Monte Carlo study.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2012, 269
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leadership and project success in development sector
Autorzy:
Ahmed, Saghir
Abdullahi, Abdullahi M.
Powiązania:
https://bibliotekanauki.pl/articles/522535.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Development sector
Multiple linear regression
Project success
Opis:
Aim/purpose – The study aims to investigate the relationship among the leadership, operational efficiency and project success in general and the impact of transformational leadership and operational efficiency on project success in particular. Design/methodology/approach – Mean comparison from descriptive statistics and multiple linear regression from inferential statistics was used to determine the association between variables and further impact of the transformational leadership and operational efficiency on project success in the development sector. The paper presents the results of a survey conducted among 200 employees from the top, middle & lower management levels of various national & international development organizations working in Pakistan like Microfinance Banks and other Rural Support Programs. Statistical Package for Social Sciences (SPSS) was used to process data. Findings – The result shows positive association among transformational leadership, operational efficiency and project success. In addition, it was found that transformational leadership and operational efficiency have a positive and statistically significant impact on the project success. It is concluded that both transformational leadership and operational efficiency are vital to achieving the optimum level of success in any project, especially in the development sector. Research implications/limitations – The integral limitation of the study was the respondents because most of the development organizations have their operations in rural areas where access was difficult because of limited time and resources. In addition, such organizations are always reluctant to provide survey feedback. Originality/value/contribution – The paper contribution is in the theoretical and practical knowledge of the project success factors in the development sector which is still a somehow unexplored area. Regulators of the development sector may be benefited from this study.
Źródło:
Journal of Economics and Management; 2017, 30; 5-19
1732-1948
Pojawia się w:
Journal of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of identifying a type 2 membership function and application to decision-making problems
Autorzy:
Uemura, Y.
Powiązania:
https://bibliotekanauki.pl/articles/970059.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
type 2 membership function
fuzzy linear regression model
fuzzy log-linear regression model
fuzzy linear polynomial regression model
indifferent zone
decision rule on a fuzzy event
Opis:
Tanaka (1991) suggested that the parameters of a linear regression model should be made fuzzy In order to better reflect the nature of the system, involving a definite degree of variability, and created a fuzzy linear regression model. This model can be formulated in the form of a linear programming problem that minimizes the span between the upper and lower limits under the constraints that include all data. In recent years, all the attention in this context has been focused on a fuzzy number that has an indifferent zone. A fuzzy number that we consider here is defined by using a type 2 membership function. This paper addresses the fact that a type 2 membership function has the upper and lower limits and shows that a type 2 membership function can be identified by expanding a fuzzy linear regression model into a fuzzy linear polynomial regression model. Finally, after a proposed fuzzy polynomial model is identified, a mathematical model is developed for a fuzzy decision-making method that accounts for an indifferent zone.
Źródło:
Control and Cybernetics; 2015, 44, 3; 399-406
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of classical and Theil-Kendall methods in assessing the significance of linear trend of precipitation in south-eastern Poland
Autorzy:
Węglarczyk, S.
Powiązania:
https://bibliotekanauki.pl/articles/101285.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
annual precipitation total
annual daily maximum precipitation
Upper Vistula River
ordinary least squares linear regression
Kendall-Theil linear regression
Opis:
Two methods of linear trend estimation: the ordinary least squares (OLS, parametric) and Theil-Kendall (TK, nonparametric) are compared in the paper. The comparison was made using 65 time series of annual totals, Pa , and annual daily maximum, Pmax, of precipitation, 30-year long each, recorded in the south-eastern part of Poland (the Upper Vistula catchment). The OLS and TK slope coefficients of trends revealed high similarity for both Pa and Pmax series. The signs of slopes are the same for 64 sites for Pa and 63 sites for Pmax with positive signs prevailing: the numbers of decreasing trends for Pa OLS and TK slopes were 3 and 4, respectively, and, for Pmax, 13 for both OLS and TK slopes. In trend significance testing, both methods produced similar results for Pa time series: out of 16 significant trends, 13 were determined with both OLS and TK at the same sites. For Pmax series such agreement was found for 4 trends out of 10. Spatial distribution of significant trends showed a kind of clustering in certain parts of the investigated area.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2016, IV/2; 1439-1450
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-Linear Regression Models for Volume Estimation of Gmelina arborea (Roxb.) in Uyo Ravine Plantation, Akwa Ibom State, Nigeria
Autorzy:
Oyebade, B. A.
Aigbe, H. I.
Eguakun, F. S.
Edem, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/1030779.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Gmelina arborea
Models
Non-linear Regression
Volume estimation
Opis:
This research elucidates non linear relationship for volume estimation of Gmelina arborea in Uyo Ravine plantation, Akwa Ibom State Nigeria. Series of functional models were developed and the estimates of measurement of stand parameters such as diameter at breast height (DBH), stump diameter (Dst), total height (THT), merchantable height, (MTH), merchantable length (MLT) were used for modeling procedures for best fit models for stand volume estimation. Twenty temporary sample plots of 20m x 20m were randomly established without replacement and all trees in each plot were measured. Quantitative data collected were subjected to correlation and regression analyses for determination of empirical relationship between the growth variables. The developed models for volume estimation were evaluated by confirming the goodness of fit of the model and the statistical significance of the parameters using statistical relevant fit indices and criteria. The results of the study showed there were significant associations between the Gmelina arborea growth characteristics both at the individual and stand levels. The correlation analyses revealed a significant association with coefficient of correlation (r) ranging from 0.576 – 0.836 among the Gmelina arborea growth characteristics at the stand level while the association between the volume and diameter at breast height gave r-value of 0.978 which was very significant P<0.05. Similarly, the results of the study in testing for relationship among the growth parameters using volume models showed that the non linear regression volume models significantly fulfilled the criteria for model selection or goodness of fit among cubic, logarithm and quadratic non linear regression models with their coefficient of determination (R2) ranging from 0.640-0.881 and low values of standard error of the estimate (SEE) at P< 0.05. These models were recommended for volume estimation of Gmelina arborea in the study area and other Gmelina arborea plantations for effective plantation forest management in Nigeria.
Źródło:
World Scientific News; 2020, 145; 46-61
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena zmian stężenia chlorków w solankach Uzdrowiska Goczałkowice-Zdrój przy zastosowaniu metod statystycznych
Assessment of the chloride concentration changes in brines of Goczałkowice health resort using statistical methods
Autorzy:
Suchy, P.
Dąbrowska, D.
Kucharski, R.
Powiązania:
https://bibliotekanauki.pl/articles/2075428.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
solanki
regresja liniowa
Goczałkowice Zdrój
brines
linear regression
Opis:
The article presents the assessment of the groundwater quality trend on the example of chlorides in the region of Goczałkowice Zdrój health resort. The data from the years 1977–2014 from two boreholes: GN-1, GN-2 were analysed. The trend assessment was made using the linear model, the fixed effect model and the robust statistic. The results of these methods indicate a downward trend of chlorides concentration.
Źródło:
Przegląd Geologiczny; 2015, 63, 10/2; 1080--1084
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determining the structural amino acid attributes which are important in both protein thermostability and alkalophilicity: a case study on xylanase
Autorzy:
Delavari, A.
Zare, S.
Ghaemi, M.R.
Kashfi, R.
Ebrahimi, M.
Tahmasebi, A.
Ebrahimie, E.
Powiązania:
https://bibliotekanauki.pl/articles/80216.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
amino acid
xylanase
hemicellulose
thermostability
linear regression
bioinformatics
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2014, 95, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ANALYSIS OF CALENDAR EFFECTS IN MARKETS OF PRECIOUS METALS
Autorzy:
Krawiec, Monika
Górska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/453430.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
precious metals
calendar effects
linear regression
GARCH models
Opis:
Calendar effects are anomalies in the behavior of asset prices that may disprove the efficient market hypothesis. The well recognized are: day-of-the-week effect, month-of-the-year effect, holidays effect and turn-of-the-month effect. These anomalies are observed in many financial markets, most often on stock exchanges, thus studies on calendar effects usually focus on stock markets. However, the aim of the paper is searching for the anomalies in precious metals markets (the empirical data covers London daily spot prices from 2008 through 2013). This is the continuation of authors’ prior research aimed at testing weak market efficiency hypothesis for precious metals markets.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2014, 15, 2; 392-402
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Results of radon CR-39 detectors exposed in schools due two different long-term periods
Autorzy:
Stojanovska, Z.
Boev, B.
Zunic, Z. S.
Bossew, P.
Jovevska, S.
Powiązania:
https://bibliotekanauki.pl/articles/147386.pdf
Data publikacji:
2016
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
comparison
linear regression analysis
relative bias
U test
Opis:
The paper deals with the recent survey of indoor radon (Rn) results in schools, where paired CR-39 detectors were simultaneously exposed to different long-term periods, i.e., one detector was exposed during the whole year and the other one in the period of the school year duration. To be able to compare the results obtained, for its analysis, the relative bias and U tests were used. It was found that there are no systematic differences between the results, which points that the exposure of the detector during summer vacations did not affect the estimated average annual radon concentration. The paired results were modelled by a linear function, giving an extremely high coeffi cient of determination R2 = 0.99.
Źródło:
Nukleonika; 2016, 61, 3; 385-389
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of multiple linear regression (MLR) analysis for concentration of chromite tailings by the flotation
Autorzy:
Deniz, Vedat
Powiązania:
https://bibliotekanauki.pl/articles/1449296.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
chromite
tailing
flotation
separation
multiple linear regression analysis
Opis:
In this study, the concentration of chromite minerals by amine flotation of a chromite tailing (slime) with content 23.84% Cr2O3 from Yeşilova-Burdur (Turkey) was investigated. In experimental studies, firstly, some operating parameters of the rougher flotation observed for a low-grade chromite tailing were investigated. Secondly, multiple linear regression (MLR) analyses were performed to determine the effects of some operating parameters on the performance of the rougher amine flotation. From the experimental results, multiple linear regression equations were developed to predict the recovery and grade of the chromite concentrate, and the regression coefficients between experimental and predicted values were found to be quite good (R2 values of 0.772 and 0.917, respectively). Additionally, it was found that the conditioning time and low pH value using $H_2SO_4$ showed an important effect on the recovery and the grade of the chromite concentrate.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 4; 579-589
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Econometric models - a method for examining factors of implementation of public-private partnership projects in selected European countries
Modele ekonometryczne - metoda badania czynników realizacji projektów partnerstwa publiczno-prywatnego w wybranych krajach europejskich
Autorzy:
Rogowski, Andrzej
Zagożdżon, Beata
Powiązania:
https://bibliotekanauki.pl/articles/2215600.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Technologiczno-Humanistyczny im. Kazimierza Pułaskiego w Radomiu
Tematy:
econometric model
linear regression
non-linear regression
public-private partnership PPP
model ekonometryczny
regresja liniowa
regresja nieliniowa
partnerstwo publiczno-prywatne PPP
Opis:
Modern science is based on the study of economic phenomena and tries to quantify them in a measurable way. Econometric models are used for this purpose. The objectof this research was to develop econometric models that show the strength of the influence of various factors on the implementation of public-private partnership (PPP) projects in the area of transport infrastructure in France, GB, Germany, the Netherlands and Belgium. The models express the dependence of the value and number of PPP contracts on the value of measurable PPP success factors. Projects with a value of at least €40 million were included. A linear model and seven models transformable to linear were used. Four groups of factors were considered as explanatory variables. Fourteen indicators were obtained. Principal components determined based on covariance and correlation matrices were also used. The best models for the number of PPP contracts are linear and hyperbolic I models. For the value of contracts - linear and hyperbolic I and logarithmic models. The best models were indicated taking into account the type of explanatory variables and regardless of the type of explanatory variables. Nine criteria were used to assess the quality of the models. Factors having a significant impact on the value and number of PPP models were identified from the best models. Factors having no significant influence were also indicated.
Współczesna nauka opiera się na badaniu zjawisk ekonomicznych i stara się je kwantyfikować w sposób wymierny. Do tego celu wykorzystuje się modele ekonometryczne. Przedmiotem badań było opracowanie modeli ekonometrycznych, które pokazują siłę wpływu różnych czynników na realizację projektów partnerstwa publiczno-prywatnego (PPP) w obszarze infrastruktury transportowej w Francji, Wielkiej Brytanii, Niemczech, Holandii i Belgii. Modele te wyrażają zależność wartości i liczby kontraktów PPP od wartości mierzalnych czynników sukcesu PPP. Uwzględniano projekty o wartości co najmniej 40 mln euro. Zastosowano model liniowy oraz siedem modeli przekształcalnych do liniowego. Jako zmienne objaśniające uwzględniono cztery grupy czynników. Uzyskano czternaście wskaźników. Wykorzystano również składowe główne wyznaczane w oparciu o macierze kowariancji i korelacji. Najlepszymi modelami dla liczby umów PPP są modele liniowe i hiperboliczne I. Dla wartości umów - modele liniowe i hiperboliczne I i logarytmiczne. Wskazano modele najlepsze z uwzględnieniem typu zmiennych objaśniających i bez względu na typ zmiennych objaśniających. Do oceny jakości modeli wykorzystano dziewięć kryteriów. Na podstawie modeli najlepszych wskazano czynniki mające istotny wpływ na wartość i liczbę modeli PPP. Wskazano również czynniki nie mające istotnego wpływu.
Źródło:
Journal of Civil Engineering and Transport; 2022, 4, 3; 25--55
2658-1698
2658-2120
Pojawia się w:
Journal of Civil Engineering and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przestrzenne zróżnicowanie bezrobocia rejestrowanego w Polsce w latach 1999-2006
Registered Unemployment in Poland by Region in 1999-2006
Autorzy:
Tokarski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/574827.pdf
Data publikacji:
2008-08-31
Wydawca:
Szkoła Główna Handlowa w Warszawie. Kolegium Analiz Ekonomicznych
Tematy:
unemployment
labor market
regional/local analyses
linear regression method
Opis:
The author examines unemployment in different regions of Poland and its determinants in 1999-2006. The analysis focuses on differences in joblessness at the county (local) level. The discussion of the regional diversification of unemployment is combined with analyses describing the diversification of unemployment on local labor markets in sectors such as agriculture, industry, construction, market services, and non-market services. The statistical analyses described in the article are based on a simple linear regression method. The analyses show that the lowest jobless rates were usually noted in large and medium-sized cities where most of the labor force is employed in the market services sector. Relatively low unemployment rates were also noted in agricultural counties in which small private farms absorbed labor market shocks. The highest unemployment rates were noted in post-industrial areas and areas that were formerly home to many state-run farms.
Źródło:
Gospodarka Narodowa. The Polish Journal of Economics; 2008, 225, 7-8; 25-42
2300-5238
Pojawia się w:
Gospodarka Narodowa. The Polish Journal of Economics
Dostawca treści:
Biblioteka Nauki
Artykuł

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